Two vertical poles of heights, 20 m and 80 m stand apart on a horizontal plane. The height (in m) of the point of intersection of the lines joining the top of each pole to the foot of the other, from this horizontal plane is

Two vertical poles of heights, 20 m and 80 m stand 50m apart on a horizontal plane. The height (in m) of the point of intersection of the lines joining the top of each pole to the foot of the other, from this horizontal plane is

Two vertical poles of height 10 m and 40 m stand apart on a horizontal plane. The height (in meters) of the point of intersection of the line joining the top of each pole to the foot of the other, from this horizontal plane is

Two vertical poles 20 m and 80 m high stand apart on a horizontal plane. The height of the point of intersection of the lines joining the top of each pole to the foot of the other is:

Two vertical poles 20m and 80m heigh stand apart on a horizontal plane. The height of the point of intersection of the lines joining the top of each pole to the foot of the other is

Two vertical poles of height 10 m and 40 m stand apart on a horizontal plane. The height (in meters) of the point of intersection of the line joining the top of intersection of the lines joining the top of each pole to the foot of the other, from this horizontal plane is

Two poles of height a metres and b metres are p metres apart. Prove that the height of the point of intersection of the lines joining the top of each pole to the foot of the opposite pole is given by (a b)/(a+b) metres.

Two poles of height 'a' metres and 'b' meters are 'p' meters apart. Prove that the height of the point of intersection of the lines joining the top of each pole to the foot of the opposite pole is given by (ab)/(a+b) meters.

Two poles of height a metres and b metres are p metres apart.Prove that the height of the point of intersection of the lines joining the top of each pole to the foot of the opposite pole is given by (ab)/(a+b) metres.

Two vertical poles AL and BM of height 25 m and 100 m respectively stand apart on a horizontal plane. If A, B be the feet of the poles and AM and BL intersect at P, then the height of P from the horizontal plane is equal to